Device for making cigarette package wrappings

ABSTRACT

A device for making cigarette package wrappings on cigarette packaging machines, in which paper cuts are successively withdrawn from a stack of cuts and are by heated transmission rollers which have picked up an adhesive from a heated adhesive containing storage container provided at selected areas with adhesive and are subsequently by a folding device folded to form a package wrapping for receiving a block of cigarettes. At the end of the folding operation the folded parts to be connected to each other are by a heated strip pressed against each other and subsequently cooled.

United States Patent 1191 v 1111 3,813,997

Niepmann 1 v June 4, 1974 [54] V E FOR MAKING CIGARETT 2,707,018 4/1955BOllOn 53/388 PACKAGE WRAPPINGS 3.335.644 8/1967 Niepmann 93/12 C3.416.289 12/1968 Sebelin 93/12 C ux nt 0H0 pmann, Gevelsberg, 3,547.01312/1970 Gentry 93/36 MM 4 Germany 3,643,554 2/1972 Lippman 93/36 MM )43,706,298 12/1972 Norman 156/578 [73] Assignee: Masehinenfabrik Fr.Niepmann &

Gevelsberg Germany Primary Examiner-Roy Lake [22] Filed: Apr. 23, 1973Assistant Examiner lames F. Coan [2]] Appl No 353 585 Attorney, Agent,or Firm-Walter Becker 301 Foreign Application Priority Data [57]ABSTRACT Apr. 21, 1972 Germany 2219540 A device for making CigarettePackage Mappings cigarette packaging machines, in which paper cuts are52 CL U 93/12 Q, 93/36 MM 93/1316 1, successively withdrawn from a stackof cuts and are by 156/578 heated transmission rollers which have pickedup an [5]] Int Cl B3) 1/30 5 1/62 1331b 1/64 adhesive from a heatedadhesive containing storage [58] Field of Search 156/578; 93/12, R, 2container provided at selected areas with adhesive and 93/36 MM, 8 R I1; 53/383, 388 are subsequently by a folding device folded to form apackage wrapping for receiving a block of cigarettes.

' At the end of the folding operation the folded parts to [56]References Cited b t d t h th b h t d t 1 e'connece o eac 0 er are y aeae s rip UNITED STATES PATENTS pressed against each other andsubsequently cooled. 1,843,429 2/1932 Marcalus 93/36 MM 1 2,420,763 51947 Wells 53/388 g 2 Claims, 1 Drawing Figure DEVICE FOR MAKINGCIGARETTE PACKAGE WRAPPINGS The present invention relates to a devicefor producing cigarette package wrappings on cigarette-packing machinesfrom cuts of paper or cardboard which are withdrawn from a stack,provided by a segment roller cooperating with a transfer roller, atcertain areas with an adhesive from an adhesive container, and arefolded to form a unilaterally open wrapping on a folding device withfolding mandrels circulating on an endless chain and by stationaryfolding switches and folding thumbs, whereupon the wrapping is depositedon a conveyor to receive blocks of cigarettes provided with an envelope.

Heretofore, cigarette package wrappings prepared on cigarette wrappingmachines were glued with cold glues which with each idling of thewrapping machine for a longer period of time requires a cleaning of theglue-applying device from the hardened glue. This cleaning is necessarynot only after completion and at the end of the daily work period andprior to the start of the daily work period, but also by forced idlingof the device in view of disorders, thereby considerably increasing therespective idling periods.

It is, therefore, an object of the present invention to provide a devicefor preparing cigarette package wrappings on cigarette wrapping machineswhich without regard to the device for the glue application will beready to start at any time and willalso during forced machine idlingnotfurnish any incompletely glued ciga rette package wrappings. v

' These and other objects and advantages of the invention will appearmore clearly from the following specification, in connection with theaccompanying drawing, diagrammatically illustrating a side view ofadevice according to the present invention.

Starting from a device of the above mentioned heretofore known type, itis suggested according to the present invention, in addition to theadhesive container for the respective adhesive of any standard type alsoto provide the transfer roller and the segment roller with heatingmeans, and at the end of the folding device to arrange a heated pressingstrip and a cooling-off section following said strip.

In this way, a device is created according to the present inventionwhich without cleaning the device for the application of the adhesivewill be ready to start at any time; By the obtained reactivation of theadhesive prior to the desired gluing operation, a non-desired orincomplete gluing of the cigarette package wrappings will be prevented.These cigarette package wrappings will, by the application of pressureand the defined cooling off, safely be glued at the finish folded areasalso when the cigarette wrapping machine had to be stopped in view of afailure or disturbance.

According to a preferred embodiment of the invention, the transferrollers and the segment rollers are respectively provided with arotating electric heating cartridge.

Referring now to the drawing in detail, only that much is shown of thecigarette wrapping machine which is necessary for the understanding ofthe present invention. More specifically, only a conveyor path 1 isshown of the cigarette wrapping machine, on which path cigarette blocks3 provided with a foil envelope are conveyed by followers 2. Eachcigarette block 3 is to be inserted into a package wrapping 4 which isproduced on a folding device located above the conveyor path 1 and withits open end face is, in the direction toward the oncoming cigaretteblocks 3, deposited on the conveyor path 1. During the insertion of thecigarette block 3, the wrapping 4 is held stationary by a controlledabutment 5 which, following the insertion of the respective cigaretteblock, is moved out of the path of movement of the cigarette blocks 3.

The folding device used for producing the package wrappings 4 comprisesa plurality of folding mandrels 6 which are connected to an endlesschain 7 circulating in steps. This chain 7 is driven by a driving roller8 and is passed around a reversing roller 9 which, in the specificembodiment illustrated in the drawing, is located vertically above thedriving roller 8. In view of this arrangement, two rectilinearcirculating sections 'are obtained for the folding mandrel 6 connectedto the chain 7. Within the region of these rectilinear circulatingsections, the package wrappings 4 are folded.

Behind the circulating section which in the drawing is shown on theright-hand side, there is arranged a stack 10 of cuts 11 for producingthe package wrappings 4. The individual cuts 11 are withdrawn from thestack by a suction device 12 and are conveyed to two transport rollers13. One of these transport rollers 13 cooperates with a segment roller14 which at its segments is, by a transfer roller 15, provided with ameltable adhesive stored in an adhesive container 16. in order tomaintain the normally solid adhesive in liquid condition, the adhesivecontainer 6 is equipped with a heating device 17. The segment rollers14, as well as the transfer roller 15 comprise electrical heatingcartridges 18 which rotate together with said rollers, in order tomaintain the adhesive in liquid condition during the application of theadhesive.

By means of the device for the application of the adhesive, the cut 11is, by a controlled lever 19, pushed onto one of the folding mandrels 6,the wide sides of which are parallel to its path of movement. During itsstepwise movement, the folding mandrel 6 which carries the cut 11 movesinto the region of longitudinal folders 20 which bring about the lateralfolding of the package wrapping 4. By means of a controlled foldingthumb 21, as well as by folding switches 22 and 23, the bottom of thepackage wrapping 4 is produced so that the mandrel 6 carries a packagewrapping 4 which is folded with the exception of one end face when themandrel enters the upper arc-shaped circulating section. in front ofthis arc-shaped circulating section and in its center thereis provided aheating device 24 each, by means of which the meltable' adhesive on thefinish folded package wrapping 4 is reactivated by heating. Thereactivation is concluded by a heating section 25 adjacent to thearc-shaped circulating section. This heating section 25 is arranged on apressing strip 26 which latter produces the necessary pressure for asafe gluing of the package wrapping 4. This pressing strip 26 which isprovided with the heating section 25 is followed by a cooling-offsection 27, by means of which, while the pressed-on pressure ismaintained, a consolidation of the adhesive and thus a safe gluing ofthe package wrappings 4 is effected. The cooling off of the cooling-offsection 27 may be effected, for instance, by

air currents at low temperature which are supplied through air conduits28.

v On each folding mandrel 6 there is provided a springurged arrestingholder 29 which, after completion of the longitudinal folding, is placedupon the glue seam of the package wrapping 4 and presses against thesame until the package wrapping 4 is withdrawn from the folding mandrel6. For transferring the finished package wrapping 4 to a transfer device30 located below the driving roller 8 for the chain '7, the holder 29is, by means of a pressure lever 31 lifted off from the folding mandrel6 so that the package wrapping 4 can be pulled downwardly.

The withdrawal of the package wrapping 4 from the folding mandrel 6 iseffected by means of a withdrawing gripper 32 which withdraws thefinished package wrapping 4 not only vertically downwardly from therespective folding mandrel 6, but in addition thereto, turns the same by90 so that it can subsequently, with its wide side, be deposited uponthe conveyor path 1. The package wrapping 4, which is open at its endface, will then with the finish glued bottom, engage the abutment sothat a cigarette block 3 conveyed thereto by a follower 2 can beinserted into the open end face of the package wrapping 4.

It is, of course, to be understood that the present invention is, by nomeans, limited to the particular showing in the drawing, but alsocomprises any modifications within the scope of the appended claims.

What I claim is:

1. A device for preparing cigarette package wrappings on cigarettepackaging machines from cuts of paper and cardboard, which includes:storage means for storing cuts of papers and cardboards, withdrawingmeans arranged adjacent said storage means for withdrawing cuts one at atime from said storage means, adhesive container means adapted toreceive adhesive, heating means associated with said container means formaintaining adhesive in said container means in liquid condition,transmission roller means for picking up adhesive from said containermeans and including a segment roller for applying adhesive to selectedareas of a cut withdrawn from said storage means. heating meansassociated with said transmission roller means for heating the same andthereby the adhesive thereon, folding means operatively connected tosaid withdrawing means and comprising endless conveyor means includingcirculating folding mandrels and stationary folding switches and foldingthumbs for receiving cuts with adhesive applied thereto from saidtransmission roller means and folding said cuts to a package open at oneend, and means for releasing said last mentioned package onto a conveyorfor receiving a cigarette block, pressure strip means arranged at theend of said folding means for pressing glued portions of a foldedpackage together, and heating means associated with said strip means forheating same, said strip means being followed by a cooling path forcooling off pressed together package sections.

2. A device according to claim 1, which includes electric heatingcartridge means respectively connected to said transmission roller meansfor rotation therewith and forming the heating means therefor. l

1. A device for preparing cigarette package wrappings on cigarettepackaging machines from cuts of paper and cardboard, which includes:storage means for storing cuts of papers and cardboards, withdrawingmeans arranged adjacent said storage means for withdrawing cuts one at atime from said storage means, adhesive container means adapted toreceive adhesive, heating means associated with said container means formaintaining adhesive in said container means in liquid condition,transmission roller means for picking up adhesive from said containermeans and including a segment roller for applying adhesive to selectedareas of a cut withdrawn from said storage means, heating meansassociated with said transmission roller means for heating the same andthereby the adhesive thereon, folding means operatively connected tosaid withdrawing means and comprising endless conveyor means includingcirculating folding mandrels and stationary folding switches and foldingthumbs for receiving cuts with adhesive applied thereto from saidtransmission roller means and folding said cuts to a package open at oneend, and means for releasing said last mentioned package onto a conveyorfor receiving a cigarette block, pressure strip means arranged at theend of said folding means for pressing glued portions of a foldedpackage together, and heating means associated with said strip means forheating same, said strip means being followed by a cooling path forcooling off pressed together package sections.
 2. A device according toclaim 1, which includes electric heating cartridge means respectivelyconnected to said transmission roller means for rotation therewith andforming the heating means therefor.